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As those of you who use the gas know it becomes an explosive mix at 9{e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d} volume of a fixed volume.
So, where are the guide lines as to re gassing an R600a appliance?
Whilst I appreciate that a small fridge might have 18 grams and a fridge freezer as little as 55 grams, its the 9{e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d} mix that is important and not the quantity.
So, what do you guys do? Personnally I won’t regas an R600a at all with a full charge, although an exception is a brand new appliance suffering from oil absorbtion. That though, is my call and down to my experience with R600a over the last 5 years plus.
Today, I went to an Electrolux F/F, practically no gas, 20 months old and decided to not regas it, as I could not determine where the leak was (the leak was undetectable on torr gauge), also not being prepared to allow it to be in the insulation. I wrote the appliance off.
Interested to know what others do and your thoughts.
KevinRe: R600a
We make the same consideration.
It is all too easy to consider dropping a few more grammes in, but being an explosive substance, not worth the risk. If it is brand new, then worth a shot in case it was underdosed in production, but only after one good look over and a stand by test after vaccing.
Alex
Re: R600a
kheath wrote:As those of you who use the gas know it becomes an explosive mix at 9{e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d} volume of a fixed volume.
So, where are the guide lines as to re gassing an R600a appliance?
Whilst I appreciate that a small fridge might have 18 grams and a fridge freezer as little as 55 grams, its the 9{e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d} mix that is important and not the quantity.
So, what do you guys do? Personnally I won’t regas an R600a at all with a full charge, although an exception is a brand new appliance suffering from oil absorbtion. That though, is my call and down to my experience with R600a over the last 5 years plus.
Today, I went to an Electrolux F/F, practically no gas, 20 months old and decided to not regas it, as I could not determine where the leak was (the leak was undetectable on torr gauge), also not being prepared to allow it to be in the insulation. I wrote the appliance off.
Interested to know what others do and your thoughts.
Kevin
Are you referring to topping up a system that’s low on gas?Re: R600a
I suppose I’m referring to NOT topping up a system thats low. It throws up the question of why its low?
During the first months of an appliance its fairly obvious that “Virgin Oil” within the compressor is going to absorb a {e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d} of the charge. So 10{e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d} absorption in my quoted examples are 1.8 or 5.5 grams, easily achievable and recoverable. No probs there.Whilst I don’t know the exact reasons or details I’m aware of a couple of examples where the over regassing of R600a appliances descimated a couple of kitchens/conservatories, once explosive mix and spark were introduced.
In a previous life I was trained to work with, look after, service and destroy all sorts of stuff that “exploded”. I well understand that in a confind space that a small detonation is just as devasting as a larger one in a larger space. So an integrated appliance that reaches explosive mix will reduce the kitchen/conservatory to rubble.
Where next after iso butane??? Propane?Just a Monday night question to get you thinking……
KevinAs my birthday is November 5th, I could say light the blue touch paper and retire, but ………
Re: R600a
I was always taught that if there was no gas in it then there was a reason for that to happen.
When you have a potentially explosive gas, as we have now (which is IMO just stupid and invented by a German IIRC, but heh ho), then it has to be going somewhere and there’s no way that the oil will absorb a full charge, so I’d be looking for a leak. If I couldn’t find one I’d have to assume that it was internal. That being the case you’d have to logically assume that there was a danger here of a possible buildup and explosion risk.
Proved quite nicely by Brandt with their amazing exploding fridges, but I’d bet they’re not the only ones to have had it happen. Mind you they were made by a French/Spanish company and they’ve got a chip on their shoulder about the English so you never know, it could be revenge for a few things.
I’d go with your call on it Kev, I wouldn’t start chucking gas into it as I like to sleep at night.
K.
Re: R600a
Hhhmmmmm!
If I find a R600A (or any) system low then the first job is to find the leak.
If the leak is found on the high side then I repair the leak, flush and pressure test with N2, vac both high and low sides then regas according to label.
If it’s leaking on the low side I usually change the compressor.If I cannot find the leak (the gas must of gone somewhere, right?) I deem the appliance to be beyond repair.
🙂Re: R600a
i know this is an old thread but i have never actually managed to find a lead i have tried a sniffer and filling with r134a but i never find these leaks is there another technique i should use?
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